Head lamp



E. P. BONE J1me 3, 1930.

HEAD LAMP Filed Feb. 17, 1928 INVENTOR.

ATE EY.

I I 1 T Patented Jae 3,1930 I v 1,761,811

7 35' nary'conditionabut capable of prompt adsolenoid 9 td'theflring 5.The'soleno'id 9 it? w as; PATENT Evan r. BONE; F CINCINNATI, euro HEADLAMP Application filed February 17, 1928. serial Nd. 255, 121-.;

v My invention relates to headlamps and In the'particular embodiment ofmy inven more particularly to means within the headtion selected forillustration: lamps for casting a shadow in the projected Fig. 1 is avertical axial section through a light beam in the area striking theeyes of the headlamp in which my inventio'ri i's included, a driver ofan opposing vehicle. a 4 from frontto back, showing the rays as theyEvery headlampprojects a light image. emerge from the headlampfand tlieimage This imageis formed either by alight conthattheycastupon awall, jl 'centrating reflectoror 'oneor more suitable F 1g: 2; an" enlargeddetail, is'anxelevatiofi lens or by a combinationv of a concentrating ofthe unitincluding the screen o erated by a reflector and a lens. In someinstances the rotary solenoid, g i I v a image is circular and formedsimply by the .Fig. 3 is an axial section'ofi{thej solenoidsubstantially uniform concentrat on of the with the armatures and theirshaft shown in lightrays from the source of light within the fulhand a Ii (v headlamps and is substantially uniform 1n Fi 4 1 a Se ti n th li e4-; 4'of 3'. I

r a light, intensity over the entire area. Other I have here-shown} forpurposes ofjillus 3:5

aheadlamps project the rays in such' a man- I tration only thepreferredform of headlamp, ner as to form av lightimage of any desiredin which thisinvention may housed, and the shape. and of varyingintensity on different combination horizontal d, V fil e g in;

V 'portionsof the image. a i can'descentjlarnp. which is the subject ofthe Manyheadlamps heretofore devised have invention in my co=pendingapplication; Se 76 provided divers means for preventing glare rial250Q549 for method o' f aind means for in the eyes of the driver of anopposing veilluminatinga roadWay,-file'd'Jan. 3'Oth',-l92 8 i' hicle.Such headlamps vare provided with Referring'noyvto the draiv'inglj isaheadi tilting reflectors or various types of dlmmers lamp casing Withinthe rear part of which is and in P r accomplish the result Of t secureda "reflector 2' and an incandescent i f vention, however, certaindisadvantages neclamp A piano convert lens ijissecured'in essarilyfollow, In cutting off the light rays any suitablemanner inthe front ofthe (ya-s above and to the left, these previous devices ing, and ring 5is removably secured tothe alsoicutiofi the rays to the right andilluminainner periphery of the casing l? and supports tion'of the;roadway-for any appreciable disa fined translucent screen 6 horizontallytance ahead isprevented'. V j l mounted. The two sectionsfof thecasingblf The principal object of my invention is-to are 's'ecuredtogether in any suitable manner. provide a headlamp. with fullilluminating The brackets orsupports'7 and s'prereeably capacity for theentireroadvvayunder ordiformed integral vj'vith the ring 5 firmly ho'ldjustment to cast apronounced shadow over cpnsistsof ja-casirfg-loandends$11ana12I the area within whichwould be locatedthe The; p le pieces13 and 'l lof iron or' other 7 eyes of the drivers of oncoming vehicles,vvithn agnetic'- material within the casing 103 's" out-ailec't'inggtheilluminationof other areas. seou'red thereto by'screws' 15.Thesliafts I6 [Another objector-my invention is to proandBlto whichisrigidly seciifl'efdj-tlie, armaf' fvide means to accomplish theaboveobject ture- 32'having' enlargementsii; an "18; are that may beinstantlyand easily operated as journalled in the ends 11 and 12 61?" otationfdesired from any convenient place such as the The" Wire 7 19 f-rom anysuitable" source of dashboard'of anautomobile.electricalenergy'supply'-(notjshoyvfrfipasses" v ,ijf Another object ofmy invention is to prothrough an aperture 20 -iii the end] 12 and is evide' simple Ineans to accomplish this object spirally Wound aroundshaft that are easily constructedand'reasonably in diately insideofthecasing 10' andthen passexpensive to manufacturer ing b th armamreenargeraeneir is -weana 7 @These objects I accomplish b providing a aroundthe armature'at 2l 'ja ismallfniovable screen within tie headlamp.edeatsggzsx: a 1w 1. i i 7 2 1 I g I 1,761,

- cured to an arm 24; is connected to'the'bloek '25 on the end of theshaft 16. i

vWhenelectricity passes through the; wire 19 into the solenoid there-1sa magnetic attraction between the armature enlargements 17 and l8andthe'pole pieces13 and 14, so that the parts" takethe positions: shown111 full lines in Figs. 1 and 4, and when the elec trieal circuit isdiscontinued, there" islno' longer any magnetic attraction an'dthesereenshown in dotted lines'in Figs. 1 and 4. I When the'screen'is inoperative; or full, line position as shown in Fig. 1,'an image is caston fthe;b0t1d 26 as shown "Theincandescent ,invention,as -applieditoalparticular type of V p V e 1 headlampfljdo notlwish tobe limite'dtothis 7 7 o I V I 'fo'rrn alone since it mayhensed with anytype Y I a a;n a

. of headlamp whether using such a screen as theone indicated at 6 or.with one usin m a V sereen at all; and likewise any suitable reflecor vtor, lens or ineandeseentlampfl 'mayThe em larnp here usedle'asts ani'rnage in the general f A form) of an isoscelesjtriangle" 27, with aninv tensellightspot'28 near the ape Theshadow1 29 is eastbythe fixedscreen 6 and the darkest spot 3O isfeastloy theinovable opaqnesereen2853i; an areaiwhieh it oanreadily lee seen I will-include the eyes-ofdriver of an' oppos j ingvehicle Although 'I .hane shown and deserihed.

ployed.

by LettersPatent. of the United States :1 V

In combination withaheadlamp haiving I ;o I

. g a 'sourcejof light and'means for projectinga' j a i ht m e b e ab ocr n ch he f i r in. operative'position intercepts part of the lightraysftoform a'fshadow inrthe light'image,.a.s'olenoid ha vingia,rotatingcore and means f or rlgidly seeurlngsaid sereento said core forrotationi 2. vInoombination withfa headlamphaving.

45 a translucent screen 5 horizontally disposed" 7 o Within saidheadlamp in thelp'ath of rQme-ofthe projected rays reducing theintensityof i illlirninationfofLthoseQrays passing there: through', v arotatable-snbstantially(opaque' LY i' "screen-n allynewtth P IQtthe.l gt V my ys enq -hav se otat ng coreia'ndv s 7 means forj rigidlysecnringsaid ;.r otatable f a V l c 'eenf clG re, Said so enoandrotatable means 1-:torl'proj ecting ,a light v image, a fixed whenoperative positionto substantially intercept those rays. striking fit, asolenoid having a rotating coreand means forrigidlyff r I securing saidrotatable screenato said core; 1

jected; light rays. V-

I testimony whereof 111598? hriiiito at my'hand v a a movestsaitljjscree l into," the ath of: some. of

' 'na tiq wi hfii-"headlanlpihav, 7 mans Profiting Z i ight image, a; arfi ihq izontallyfdi po d h s a a headlamp-Lin the Path i-some.bfitheprojet; ed raysreducingthe int n it fi "(If those rayspassing th tgt a mtat;

i P rays gwn weight jand"adapt d:

Q EVAN i Bonn 1 23 by its own weight'falls into the position; I g

